INDUSTRY COMPONENT

Lower Die

The lower die is the stationary component in a die set that shapes materials during stamping, forging, or pressing operations.

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Component Specifications

Definition
In industrial manufacturing, the lower die is the fixed half of a die set mounted on the press bed or bolster plate. It contains cavities, cutting edges, or forming surfaces that work in conjunction with the upper die to perform operations such as blanking, piercing, bending, drawing, or coining on sheet metal, plastics, or other materials. The lower die provides precise alignment through guide pins or bushings and often includes features for material feeding, part ejection, and scrap removal.
Working Principle
The lower die remains stationary while the upper die descends under press force. Material placed between them is shaped through mechanical deformation, shearing, or compression. The die's geometry determines the final part shape, with clearance between upper and lower cutting edges ensuring clean separation in shearing operations.
Materials
Tool steel (D2, A2, M2), carbide inserts, hardened steel (HRC 58-62), sometimes with wear-resistant coatings (TiN, TiCN)
Technical Parameters
  • Width 100-1000 mm
  • Height 50-300 mm
  • Length 100-1500 mm
  • Weight 10-500 kg
  • Hardness 58-62 HRC
  • Surface Finish Ra 0.4-1.6 μm
Standards
ISO 9181, DIN 9830

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lower Die.

lower die die set stamping die metal forming press tool die component industrial tooling Lower Die in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Die Set

A precision assembly of matched upper and lower dies used in forging presses to shape metal workpieces under high pressure.

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Engineering Analysis

Risks & Mitigation
  • Wear and tear from continuous use
  • Misalignment causing part defects
  • Material fatigue leading to cracking
  • Improper clearance causing burrs or tool damage
FMEA Triads
Trigger: Insufficient lubrication
Failure: Increased friction and premature wear
Mitigation: Implement automated lubrication systems and regular maintenance schedules
Trigger: Material thickness variation
Failure: Inconsistent part quality and tool damage
Mitigation: Use material thickness sensors and implement SPC controls

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.02 mm for precision dies, ±0.05 mm for standard dies
Test Method
Coordinate measuring machine (CMM) inspection, surface roughness testing, hardness testing

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between lower die and upper die?

The lower die is stationary and mounted on the press bed, while the upper die moves with the press ram. The lower die typically contains die cavities and cutting edges, while the upper die carries punches and forming tools.

How often should lower dies be maintained?

Lower dies require regular inspection every 10,000-50,000 cycles depending on material hardness and production conditions. Maintenance includes cleaning, sharpening cutting edges, checking alignment, and replacing worn components.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Lower Connection (Pin) Lower Die Block